Submission #401232

#	Time	Username	Problem	Language	Result	Execution time	Memory
401232		my99n	Comparing Plants (IOI20_plants)	C++14	0 / 100	4075 ms	292 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

int n;
int ans[5010];
vector<int> r;

int dis (int i, int j) {
  if (i == -1e9 or j == -1e9) return -1e9;
  return (j-i+n) % n;
}

void init(int k, vector<int> R) {
  r = R;
  n = r.size();
  int lev = 0;

  int cnt = 0;
  while (cnt < n) {
    int last = -1e9;
    queue<int> c;
    for (int i = 0; i < n; i++) {
      if (r[i] == 0) {
        if (dis(last, i) < k) {
          lev++;
        }
        ans[i] = lev;
        r[i] = -1;
        c.push(i);
        // cerr << i << ' ' << lev << endl;
        last = i;
        cnt++;
      }
    }
    while (!c.empty()) {
      auto t = c.front(); c.pop();
      for (int i = 1; i < k; i++) {
        int ind = (t-i+n) % n;
        // cerr << "- " << ind << endl;
        r[ind]--;
      }
    }
    lev++;
  }
	return;
}

int compare_plants(int x, int y) {
  if (ans[x] > ans[y]) return -1;
  if (ans[x] < ans[y]) return 1;
	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25